Using the metric systems for the measuring of industrial bolts as well as metric bolts is becoming increasingly common in industry in the United States. The metric system may also be known as the International System or SI (from the French, Systeme International d’Unites). Read More…
Leading Manufacturers
Ken Forging
Jefferson, OH | 888-536-3674Our company has manufacturing experiences dating back to 1970 and over the years we have grown into an international supplier of bolts.

Southern Fasteners & Supply, LLC
Winston-Salem, NC | 800-642-0921With more than 130,000 commercial and industrial grade fasteners in inventory, our wide distribution network is positioned to get you the parts you need fast. Whether we’re keeping your bins full with a Vendor Managed Inventory Program or rushing emergency replacement parts with 24-hour on-call service, you’ll know that we’ve got you covered. Our HQ’s quality system is certified to AS9120 with ISO 9001 by NSF-ISR to ensure the fasteners we supply are the highest quality parts available.

AFT Fasteners
Mansfield, TX | 877-844-8595We are located in The Dallas area, but we are dedicated to serving customers everywhere. Our products serve many industries including automotive, construction, and many others! We have been producing high quality products since 1984 and this is a tradition that we strive to continue! Get in touch with our customer service department today to learn more about what we may do for you!

E & T Fasteners
Concord, NC | 800-650-4707E & T Fasteners provides your fastening solutions in record time. We specialize in molded and machined industrial plastic and metal fasteners. We offer stock items such as plastic bolts, screws, nuts, washers, spacers, threaded rod, metal stud fasteners and non-threaded metal fasteners. Plus, we'll customize to your specifications.

Haydon Bolts, Inc.
Philadelphia, PA | 215-537-8700As one of the most experienced industrial bolt manufacturers in the world, we put our experience to work in the development and production of your part: eye bolts, anchor bolts, hexagon bolts, stainless steel bolts and u bolts. We’re a proud member of the AISC, and our roots reach back to 1864. Our clients trust us to supply the best bolts, washers, nuts, rods, weld studs, turnbuckles, and mechanical anchors on the market. Come to us for one of the largest inventories of bolts, nuts and washers.

BTM Manufacturing
Kansas City, MO | 800-369-2658Established in 1961, BTM Manufacturing creates fastener and threaded components for OEMs across the country. We design high-quality U-bolts, J-bolts, spade bolts, studs, anchor bolts, eye bolts, and rods for multiple applications. We provide custom manufacturing services to ensure customers can find the right part for their project.

More Metric Bolts Suppliers
There is such a wide range of metric bolts and fasteners that it can be complicated to find the right size for an application. They can be purchased individually or according to a specific design and size requirement. Metric fasteners are indicated by the letter M followed by the inner fastener diameter in millimeters (mm), for example, M5 for a bolt that is five millimeters in diameter. Bolts are typically available in both metric and non-metric designations and non-metric bolts and screws are also measured according to diameter but this is labeled in inches and parts of inches rather than millimeters. Some English bolts also use a separate numbering system that increases in size accordingly.
Commonly used for both structural and non-structural applications, metric bolts, screws and other fastening components are able to be constructed with full threading or partial threading. Construction, equipment joining and securing, automotive engines on cars, motorcycles and larger machines are all examples of common uses of bolts. Due to the wide range of application and intended use for bolts, there are a number of factors to consider when determining the most suitable style and materials for specific purposes. For heavy load and structural uses such as foundation or bridge securing, anchor bolts are used.
If an application requires corrosion resistant materials which are able to be used for even heavy duty purposes, stainless steel bolts are the most suitable choice. Most types of bolts are available in metric sizes, and many bolt manufacturers will stock a comprehensive inventory of metric bolts, nuts and screws in order to be able to meet the wide range of needs in terms of size and capability. Hex bolts are the standard design for the heads of metric bolts, although this can change based on application. Other typical head designs include flange head types, or the more complex eye bolts or loop bolts.